add error handling to ui

1 files changed, 65 insertions, 0 deletions

diff --git a/lib/nes/app/action.hh b/lib/nes/app/action.hh
new file mode 100644
index 0000000..f63c17d
--- /dev/null
+++ b/lib/nes/app/action.hh
@@ -0,0 +1,65 @@
+#pragma once
+
+#include "../common/status.hh"
+#include <string_view>
+
+namespace nes::app
+{
+	/// An action for the application to process after a scene has handled its events.
+	class action
+	{
+	public:
+		enum class type
+		{
+			none,
+			go_to_title,
+			go_to_browser,
+			go_to_settings,
+			go_to_help,
+			close_popup,
+			launch_game,
+			show_error,
+		};
+
+	private:
+		type type_{ type::none };
+		std::string_view file_name_;
+		std::string_view message_;
+		status error_{ status::success };
+
+	public:
+		explicit action() = default;
+
+		static auto go_to_title() -> action { return action{ type::go_to_title }; }
+		static auto go_to_browser() -> action { return action{ type::go_to_browser }; }
+		static auto go_to_settings() -> action { return action{ type::go_to_settings }; }
+		static auto go_to_help() -> action { return action{ type::go_to_help }; }
+		static auto close_popup() -> action { return action{ type::close_popup }; }
+
+		static auto launch_game(std::string_view const file_name) -> action
+		{
+			auto res = action{ type::launch_game };
+			res.file_name_ = file_name;
+			return res;
+		}
+
+		static auto show_error(std::string_view const message, status const error) -> action
+		{
+			auto res = action{ type::show_error };
+			res.message_ = message;
+			res.error_ = error;
+			return res;
+		}
+
+		auto get_type() const -> type { return type_; }
+		auto get_file_name() const -> std::string_view { return file_name_; }
+		auto get_message() const -> std::string_view { return message_; }
+		auto get_error() const -> status { return error_; }
+
+	private:
+		explicit action(type const type)
+			: type_{ type }
+		{
+		}
+	};
+} // namespace nes::app
\ No newline at end of file